Properties

Label 2-840-1.1-c1-0-7
Degree $2$
Conductor $840$
Sign $1$
Analytic cond. $6.70743$
Root an. cond. $2.58987$
Motivic weight $1$
Arithmetic yes
Rational no
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 3-s + 5-s + 7-s + 9-s + 5.65·11-s + 2·13-s + 15-s − 3.65·17-s − 5.65·19-s + 21-s − 5.65·23-s + 25-s + 27-s + 3.65·29-s + 4·31-s + 5.65·33-s + 35-s + 11.6·37-s + 2·39-s + 2·41-s + 1.65·43-s + 45-s − 2.34·47-s + 49-s − 3.65·51-s − 3.65·53-s + 5.65·55-s + ⋯
L(s)  = 1  + 0.577·3-s + 0.447·5-s + 0.377·7-s + 0.333·9-s + 1.70·11-s + 0.554·13-s + 0.258·15-s − 0.886·17-s − 1.29·19-s + 0.218·21-s − 1.17·23-s + 0.200·25-s + 0.192·27-s + 0.679·29-s + 0.718·31-s + 0.984·33-s + 0.169·35-s + 1.91·37-s + 0.320·39-s + 0.312·41-s + 0.252·43-s + 0.149·45-s − 0.341·47-s + 0.142·49-s − 0.512·51-s − 0.502·53-s + 0.762·55-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 840 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 840 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(840\)    =    \(2^{3} \cdot 3 \cdot 5 \cdot 7\)
Sign: $1$
Analytic conductor: \(6.70743\)
Root analytic conductor: \(2.58987\)
Motivic weight: \(1\)
Rational: no
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 840,\ (\ :1/2),\ 1)\)

Particular Values

\(L(1)\) \(\approx\) \(2.284959768\)
\(L(\frac12)\) \(\approx\) \(2.284959768\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 \)
3 \( 1 - T \)
5 \( 1 - T \)
7 \( 1 - T \)
good11 \( 1 - 5.65T + 11T^{2} \)
13 \( 1 - 2T + 13T^{2} \)
17 \( 1 + 3.65T + 17T^{2} \)
19 \( 1 + 5.65T + 19T^{2} \)
23 \( 1 + 5.65T + 23T^{2} \)
29 \( 1 - 3.65T + 29T^{2} \)
31 \( 1 - 4T + 31T^{2} \)
37 \( 1 - 11.6T + 37T^{2} \)
41 \( 1 - 2T + 41T^{2} \)
43 \( 1 - 1.65T + 43T^{2} \)
47 \( 1 + 2.34T + 47T^{2} \)
53 \( 1 + 3.65T + 53T^{2} \)
59 \( 1 + 4T + 59T^{2} \)
61 \( 1 - 0.343T + 61T^{2} \)
67 \( 1 + 9.65T + 67T^{2} \)
71 \( 1 + 7.31T + 71T^{2} \)
73 \( 1 - 6T + 73T^{2} \)
79 \( 1 - 11.3T + 79T^{2} \)
83 \( 1 + 4T + 83T^{2} \)
89 \( 1 + 14T + 89T^{2} \)
97 \( 1 - 6T + 97T^{2} \)
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   \(L(s) = \displaystyle\prod_p \ \prod_{j=1}^{2} (1 - \alpha_{j,p}\, p^{-s})^{-1}\)

Imaginary part of the first few zeros on the critical line

−10.08576619873624878209199048755, −9.213306810250367533688837315710, −8.650266016370893867719229326502, −7.81572561159756502234819431402, −6.47704752107482687540143643916, −6.20960834973532222451181168030, −4.51825092134640886430000409347, −3.96040087911707127417393913666, −2.49236711775152619911786816217, −1.41278421415190826326044967939, 1.41278421415190826326044967939, 2.49236711775152619911786816217, 3.96040087911707127417393913666, 4.51825092134640886430000409347, 6.20960834973532222451181168030, 6.47704752107482687540143643916, 7.81572561159756502234819431402, 8.650266016370893867719229326502, 9.213306810250367533688837315710, 10.08576619873624878209199048755

Graph of the $Z$-function along the critical line